JauntySuspendResumeHibernate
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| Getting down to one suspend/hibernate method of Jaunty, improving the experience. | Jaunty should be using just one method of Suspend/Resume/Hibernate and sticking to this one method. Jaunty needs to improve the overall Suspend/Resume/Hibernate experience with the help of suitable debug tools to fix buggy suspend/resume/hibernate issues. |
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| ##This should cover the _why_: why is this change being proposed, what justifies it, where we see this justified. | There needs to be some rationalisation in the way suspend/resume/hibernate is controlled from userspace as there are several existing methods available: * Writing directly to /sys/power/state (lowest level) * Using /etc/acpi/sleep.sh (acpi-support) * pm-utils - current solution (as used by hal) * DeviceKit-power which supersedes the power-management functionality of hal and replaces pm-utils. The acpi-support method of suspend/resume should be removed as it is legacy and should be transitioned into hal-info and pm-utils. Having this method as well as pm-utils seems unjustifiable - it's a different suspend/resume mechanism to pm-utils and duplication of different suspend/resume functionality is not helpful. Either we continue with pm-utils or move to DeviceKit-power (which is supported by the new gnome-power-manager for GNOME 2.26). Depending on the choice, we should just have one solution for suspend/resume/hibernate instead of many. Diagnosing and hence fixing broken suspend/resume/hibernate needs to easier. A Community based Wiki tutorial needs to be written to help users to gather information that can help pinpoint and fix problems. Debugging suspend/resume/hibernate issues can be notoriously difficult; being able do dump kernel messages early to a serial console is useful, however modern PCs do not have legacy serial port hardware, so providing a USB serial console driver in initramfs is required. |
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| * https://wiki.ubuntu.com/UnderstandingSuspend |
Launchpad Entry: jaunty-suspend-resume
Created: PeteGraner
Contributors:
Packages affected:
Summary
Jaunty should be using just one method of Suspend/Resume/Hibernate and sticking to this one method. Jaunty needs to improve the overall Suspend/Resume/Hibernate experience with the help of suitable debug tools to fix buggy suspend/resume/hibernate issues.
Release Note
Rationale
There needs to be some rationalisation in the way suspend/resume/hibernate is controlled from userspace as there are several existing methods available:
- Writing directly to /sys/power/state (lowest level)
- Using /etc/acpi/sleep.sh (acpi-support)
- pm-utils - current solution (as used by hal)
DeviceKit-power which supersedes the power-management functionality of hal and replaces pm-utils.
The acpi-support method of suspend/resume should be removed as it is legacy and should be transitioned into hal-info and pm-utils. Having this method as well as pm-utils seems unjustifiable - it's a different suspend/resume mechanism to pm-utils and duplication of different suspend/resume functionality is not helpful.
Either we continue with pm-utils or move to DeviceKit-power (which is supported by the new gnome-power-manager for GNOME 2.26). Depending on the choice, we should just have one solution for suspend/resume/hibernate instead of many.
Diagnosing and hence fixing broken suspend/resume/hibernate needs to easier. A Community based Wiki tutorial needs to be written to help users to gather information that can help pinpoint and fix problems.
Debugging suspend/resume/hibernate issues can be notoriously difficult; being able do dump kernel messages early to a serial console is useful, however modern PCs do not have legacy serial port hardware, so providing a USB serial console driver in initramfs is required.
Use Cases
Assumptions
Design
Implementation
UI Changes
Code Changes
Migration
Test/Demo Plan
Unresolved issues
BoF agenda and discussion
References
KernelTeam/Specs/JauntySuspendResumeHibernate (last edited 2008-12-10 22:17:41 by 98)